1
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Prediction of deleterious single nucleotide polymorphisms and their effect on the sequence and structure of the human CCND1 gene

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Objective

          The CCND1 gene expresses a protein, G1/S-specific cyclin, that regulates the G1/S transition in the cell cycle and also inhibits retinoblastoma (RB) proteins. Overexpression or rearrangements of this gene can result in various tumours. This study aimed to identify possible deleterious non-synonymous single nucleotide polymorphisms (SNP's) of CCND1 using computational methods.

          Methods

          SNPs in the human CCND1 gene were retrieved from dbSNP. These SNPs were screened by the Sorting Intolerant From Tolerant (SIFT) algorithm and the PredictSNP classification. Mutants with deleterious SNPs were built using Discovery Studio 3.5, and dynamics studies were performed on native and mutant varieties.

          Results

          In Homo sapiens, 1194 SNPs were found, of which 94 were missense and 2 were nonsense SNPs. Three SNPs were found to be deleterious. Molecular dynamics and trajectory analysis showed that there was a significant deviation of the root mean square deviation (RMSD) values in the N216K mutant from the values of the native protein.

          Conclusion

          Based on this study, we propose that the SNP with SNP ID rs112525097 (NM_053056.2:c.648C>G) might cause aberrations in CCND1, which might lead to a change in the function of the G1/S-specific cyclin protein. This, in turn, may lead to the development of acute myeloid leukaemia (AML).

          الملخص

          أهداف البحث

          إن الجين CCND1 المعبر للبروتين G١/S-السيكلين المحدد٬ والمنظم لانتقاله في دورة الخلية يثبط أيضا البروتينات في الأورام الأرومية الشبكية. وزيادة التعبير أو إعادة التنظيم في هذا الجين قد تؤدي إلى أورام مختلفة. تهدف هذه الدراسة لتحديد الأضرار الممكنة غير المترادفة من النيوكليوتيد الوحيد المتعدد الأشكال للجين CCND1 باستخدام الطرق الحاسوبية.

          طرق البحث

          تم استعادة النيوكليوتيد الوحيد المتعدد الأشكال في جينات الإنسان CCND1 من قاعدة معلومات النيوكليدات الوحيدة المتعددة الأشكال. تم فحص هذه النيوكليوتيدات الوحيدة المتعددة الأشكال بواسطة فرز عدم الاحتمال من الاحتمال والتنبؤ بخوادم النيوكليوتيدات الوحيدة المتعددة الأشكال. كما تم بناء الطفرات التي تحوي النيوكليوتيدات الوحيدة المتعددة الأشكال الضارة باستخدام استديو الاكتشاف ٥٬٣ وأجريت الدراسات الديناميكية على أصناف محلية وطافرة.

          النتائج

          تم العثور على ١١٩٤ من النيوكليوتيدات الوحيدة المتعددة الأشكال في الإنسان٬ منها ٩٤ مغلطة و٢ لا قيمة لها. كما وُجدت ثلاث نيوكليوتيدات وحيدة متعددة الأشكال ضارة. وأظهرت الدنياميكيات الجزيئية وتحليل المسار انحرافا كبيرا في قيم متوسط جذر الانحراف التربيعي في الطفرة N٢١٦K من قيم البروتين المحلي.

          الاستنتاجات

          استنادا على هذه الدراسة٬ نقترح أن النيوكليوتيدات الوحيدة المتعددة الأشكال مع تعريفها ل rs١١٢٥٢٥٠٩٧ NM_٠٥٣٠٥٦.٢:c.٦٤٨C>G)) قد تسبب انحرافات في جين CCND 1٬ التي قد تؤدي بالتالي إلى تغيرات في وظائف البروتين G١/S-السيكلين المحدد. وهذا٬ بالمقابل يمكن أن يكون السبب في حدوث سرطان الدم النخاعي الحاد.

          Related collections

          Most cited references19

          • Record: found
          • Abstract: found
          • Article: found
          Is Open Access

          DUET: a server for predicting effects of mutations on protein stability using an integrated computational approach

          Cancer genome and other sequencing initiatives are generating extensive data on non-synonymous single nucleotide polymorphisms (nsSNPs) in human and other genomes. In order to understand the impacts of nsSNPs on the structure and function of the proteome, as well as to guide protein engineering, accurate in silicomethodologies are required to study and predict their effects on protein stability. Despite the diversity of available computational methods in the literature, none has proven accurate and dependable on its own under all scenarios where mutation analysis is required. Here we present DUET, a web server for an integrated computational approach to study missense mutations in proteins. DUET consolidates two complementary approaches (mCSM and SDM) in a consensus prediction, obtained by combining the results of the separate methods in an optimized predictor using Support Vector Machines (SVM). We demonstrate that the proposed method improves overall accuracy of the predictions in comparison with either method individually and performs as well as or better than similar methods. The DUET web server is freely and openly available at http://structure.bioc.cam.ac.uk/duet.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: found
            Is Open Access

            The RCSB Protein Data Bank: views of structural biology for basic and applied research and education

            The RCSB Protein Data Bank (RCSB PDB, http://www.rcsb.org) provides access to 3D structures of biological macromolecules and is one of the leading resources in biology and biomedicine worldwide. Our efforts over the past 2 years focused on enabling a deeper understanding of structural biology and providing new structural views of biology that support both basic and applied research and education. Herein, we describe recently introduced data annotations including integration with external biological resources, such as gene and drug databases, new visualization tools and improved support for the mobile web. We also describe access to data files, web services and open access software components to enable software developers to more effectively mine the PDB archive and related annotations. Our efforts are aimed at expanding the role of 3D structure in understanding biology and medicine.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              New functional activities for the p21 family of CDK inhibitors.

              The association of cdk4 with D-type cyclins to form functional kinase complexes is comparatively inefficient. This has led to the suggestion that assembly might be a regulated step. In this report we demonstrate that the CDK inhibitors p21(CIP), p27(KIP), and p57(KIP2) all promote the association of cdk4 with the D-type cyclins. This effect is specific and does not occur with other cdk inhibitors or cdk-binding proteins. Both in vivo and in vitro, the abundance of assembled cdk4/cyclin D complex increases directly with increasing inhibitor levels. The promotion of assembly is not attributable to a simple cell cycle block and requires the function of both the cdk and cyclin-binding domains. Kinetic studies demonstrate that p21 and p27 lead to a 35- and 80-fold increase in K(a), respectively, mostly because of a decrease in K(off). At low concentrations, p21 promotes the assembly of active kinase complexes, whereas at higher concentrations, it inhibits activity. Moreover, immunodepletion experiments demonstrate that most of the active cdk4-associated kinase activity also associates with p21. To confirm these results in a natural setting, we examine the assembly of endogenous complexes in mammary epithelial cells after release from a G(0) arrest. In agreement with our other data, cyclin D1 and p21 bind concomitantly to cdk4 during the in vivo assembly of cdk4/cyclin D1 complexes. This complex assembly occurs in parallel to an increase in cyclin D1-associated kinase activity. Immunodepletion experiments demonstrate that most of the cellular cyclin D1-associated kinase activity is also p21 associated. Finally, we find that all three CIP/KIP inhibitors target cdk4 and cyclin D1 to the nucleus. We suggest that in addition to their roles as inhibitors, the p21 family of proteins, originally identified as inhibitors, may also have roles as adaptor proteins that assemble and program kinase complexes for specific functions.
                Bookmark

                Author and article information

                Contributors
                Journal
                J Taibah Univ Med Sci
                J Taibah Univ Med Sci
                Journal of Taibah University Medical Sciences
                Taibah University
                1658-3612
                27 September 2016
                June 2017
                27 September 2016
                : 12
                : 3
                : 221-228
                Affiliations
                [a ]Department of Biotechnology, M. S. Ramaiah Institute of Technology, Bengaluru, Karnataka, India
                [b ]Department of Biotechnology, Siddaganga Institute of Technology, Tumakuru, Karnataka, India
                [c ]Department of Biotechnology, IDSG Government College, Chikkamagaluru, Karnataka, India
                Author notes
                []Corresponding address: Department of Biotechnology, Siddaganga Institute of Technology, Tumakuru 572103, Karnataka, India. vivek@ 123456sit.ac.in
                Article
                S1658-3612(16)30077-4
                10.1016/j.jtumed.2016.07.009
                6695066
                1f3a3a56-1fd1-4e7d-a006-3a27552886aa
                © 2016 The Authors

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                : 17 June 2016
                : 25 July 2016
                : 31 July 2016
                Categories
                Original Article

                سرطان الدم النخاعي الحاد,الدنياميكيات الجزيئية,acute myeloid leukaemia,ccnd1,molecular dynamics,nssnp,sift

                Comments

                Comment on this article